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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Home made valves
Interesting bit of footage here of a guy making his own vacuum tubes
http://dailymotion.alice.it/video/x3...pe-triode_tech Ron |
#2
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Home made valves
Ron(UK) wrote:
Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron I would love to know some of the properties of those remarkable tubes |
#3
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Home made valves
Fascinating footage and skills!
Ron(UK) wrote: Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P |
#4
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Home made valves
Ron(UK) wrote:
Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron Thanks for the post; very inspiring. For anyone wishing to learn more, the author's website is: http://paillard.claude.free.fr/ Also, you can access the video more simply he http://www.dailymotion.com/swf/x3wrzo (just the flash player, no baggage). If you wish to save the video, make sure your browser's cache has at least 60MB free space; when the video has concluded playing, look for a file of size 57,195,733 bytes. Copy this to 'filename.flv' and play it in VLC, or any flv player. Regards, Michael |
#5
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Home made valves
"Ron(UK)" wrote in message ... Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron Thats an amazing video. He must have buit them in the past at a factory to be so skilled. Thanks for the video. I really enjoyed it. |
#6
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Home made valves
"Ron(UK)" wrote in message ... Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron Fascinating. But I shudder to think of the unit cost. Viva mass production. Charlie |
#7
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Home made valves
In article ,
"Michael Kennedy" wrote: "Ron(UK)" wrote in message ... Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron Thats an amazing video. He must have buit them in the past at a factory to be so skilled. Thanks for the video. I really enjoyed it. Guys like that make me feel guilty about occupying space on the planet. As far as working at a factory, I'd guess no, or he'd be so tired of it that he wouldn't do it for a hobby. But I wouldn't be surprised if the level of sophistication of his tools and methods is on a par with how tubes really are made in Eastern Europe. I think some of those countries are still building weapons with tube electronics. |
#8
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Home made valves
Is that guy in Poland? There is a guy in Poland who builds some
valves.Russia still uses vacuum tubes for some things.Perhaps China does too. cuhulin |
#9
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Home made valves
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#10
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Home made valves
Ron(UK) wrote in message
... Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron What was the small hinged halved chamber , he used a few times? - for annealing the glass ? I did not follow the getter process. Would someone have to be licensed to get hold of barium, caesium ? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#11
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Home made valves
N Cook wrote:
snip --- why does everyone persist on quoting that absurd Italian URL when I posted the proper ones days ago? What was the small hinged halved chamber , he used a few times? - for annealing the glass ? I did not follow the getter process. Would someone have to be licensed to get hold of barium, caesium ? Here is a repost of the reference: Thanks for the post; very inspiring. For anyone wishing to learn more, the author's website is: http://paillard.claude.free.fr/ Also, you can access the video more simply he http://www.dailymotion.com/swf/x3wrzo (just the flash player, no baggage). If you wish to save the video, make sure your browser's cache has at least 60MB free space; when the video has concluded playing, look for a file of size 57,195,733 bytes. Copy this to 'filename.flv' and play it in VLC, or any flv player. You can download an amazing collection of pdf 'books' which thoroughly describe the process, equipment and also provide history, circuit diagrams, performance data, etc. This author has done a prodigious job and seems to have little recognition on the 'net. You can also look up his callsign, F2FO, on callsign database sites such as 'qrz.com' Regards, Michael |
#12
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Home made valves
About two or three something years ago, somebody in the
rec.antiques.radio+phono newsgroup posted a URL about a guy in Poland (I think it is Poland) who builds his own vacuum tubes. cuhulin |
#13
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Home made valves
wrote in message ... About two or three something years ago, somebody in the rec.antiques.radio+phono newsgroup posted a URL about a guy in Poland (I think it is Poland) who builds his own vacuum tubes. cuhulin He's built some Nixie tubes as well, there's been some discussion on the yahoo group neonixie-l of which he's a member. |
#14
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Home made valves
"N Cook" wrote in message ... Ron(UK) wrote in message ... Interesting bit of footage here of a guy making his own vacuum tubes http://dailymotion.alice.it/video/x3...pe-triode_tech Ron What was the small hinged halved chamber , he used a few times? - for annealing the glass ? I did not follow the getter process. Would someone have to be licensed to get hold of barium, caesium ? I took that to be an annealing chamber. As far as the 'gettering' process went, as far as I could see, he used induction heating to bring the anode up to white heat, whilst running the vacuum pump to evacuate the envelope. I would guess that this 'burns off' any remaining molecules of gas, or possibly chemically traps them in the surface of the anode, but will not leave a chemically active gettering 'splash' on the inside of the glass as you would normally see, so I suppose over a period of years, the valve will very slowly become soft, but maybe not enough to severely affect its characteristics. I know that such chemicals as barium and strontium in oxide form, are used to coat the cathodes of indirectly heated valves to enhance electron emission, but I thought that the contents of a 'traditional' gettering ring, were little more than magnesium ? I wonder how much current the filament was drawing, to get it up to the point of sufficient emission ? Certainly, the valves lit up like torch bulbs, when in use. Did you notice the pair of fans on the QRP transmitter ? The spot welding machine was interesting too. Looked as though it may have started life as a small flypress. Arfa |
#15
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Home made valves
Arfa Daily wrote:
"N Cook" wrote in message ... Ron(UK) wrote in message snip What was the small hinged halved chamber , he used a few times? - for annealing the glass ? I did not follow the getter process. Would someone have to be licensed to get hold of barium, caesium ? I took that to be an annealing chamber. snip I wonder how much current the filament was drawing, snip Please see my posts in this thread (author 'msg') and all will be answered ;-) (download the remarkably well-done pdf 'books' from the tube (valve) maker's website which provide copious detail and data). Regards, Michael |
#16
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Home made valves
Its always been a mystery to me how they get a ring of pins through the
envelope and remain gastight for decades. I see he got around it by going linear and just squashing a tube down to that line of pins and then wiring out to a conventional ring of pins base format. -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
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